Observation on the effects of blood flow restriction training with different contraction modes on the function and morphology of vastus medialis oblique in patients with knee osteoarthritis
LI Pengcheng
FENG Yu
CHEN Xiaoxia
CHEN Yuefeng
LI Weiren
HUANG Li
YAO Na
Abstract：Objective To observe the effects of blood flow restriction(BFR)training with different contraction modes on the function and morphology of vastus medialis oblique(VMO)in patients with knee osteoarthritis(KOA).Methods A total of 108 patients with KOA who were admitted to Kunming Municipal Hospital of Traditional Chinese Medicine from June 2021 to June 2023 were recruited and divided into observation group A,observation group B and control group by using random number table method,with 36 cases in each group.The control group received isotonic contraction training of VMO,and the observation group A received isometric contraction training of VMO combined with BFR training,and the observation group B received isotonic contraction training of VMO combined with BFR training.Visual Analogue Scale(VAS)scores,thigh circumference,VMO thickness,and VMO electromyographic values[including root-mean-square(RMS)value and integrated electromyography(iEMG)]were compared among the three groups before and after treatment.Results After 3 weeks of treatment,VAS scores of the left knee and the right knee in the three groups were significantly decreased compared with those before treatment(P＜0.05),and the circumferences of the left thigh and the right thigh,VMO thickness,iEMG value and RMS value were significantly increased compared with those before treatment(P＜0.05),and the improvements of the indicators in the observation group B and the observation group A were better than those in the control group(P＜0.05),and the indicators in the observation group B were more significantly improved(P＜0.05).Conclusion BFR training can effectively improve joint pain,increase VMO thickness and thigh circumference in KOA patients.Under the condition of low load BFR,the rehabilitation treatment effect of isotonic contraction training is better than that of isometric contraction training.
Keywords：Blood flow restriction(BFR)trainingKnee osteoarthritis(KOA)Isometric contractionIsotonic contractionVastus medialis oblique(VMO)
Publication Date：2024-03-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 318-322 )